To maintain your aircraft, you need the proper hole gauge tools to effectively measure your aircraft's cylinder bore. We carry the telescoping bore gauges and full ball hole gauges to measure even the smallest radii. For your engine to run effectively, no air should leave the cylinder when the piston extends. Measuring the radius of both the cylinder and the piston is essential to ensure that no air passes and that your engine is reaching its full potential. We carry the measuring tools that will effectively and easily measure your cylinder bore. Try our Travers Tool or Aircraft Tool Supply telescoping gauges, offered in a range of sizes to fit your engine type. Our Central Tools and Aircraft Tool Supply Full Ball hole gauges measure much smaller diameters, from .125 to .500 inches. For extremely precise measurements, our Fowler dial bore gauges will deliver. These sets include the tools and accessories you need for complete cylinder diameter data collection. To calculate your aircraft cylinder bore and maximize performance, we carry the hole gauge tools and accessories you need.

If you have any additional questions, we encourage you to check out our knowledgeable Help Center.

Hazmat Item Details

If the item that you are trying to ship is deemed Hazmat you may have an additional fee added to your order when you check out. Items are deemed Hazmat as per the Section 14 Transport Information located in the item's Material Safety Data Sheet (MSDS). Sorry, but things that can go "boom" are hard to ship and we have to pass on our fees.

Flammable or explosive items such as Fire Extinguishers, MEK, Toluene, Paint Thinner, etc. are subject to a $25.00 Hazmat fee via ground shipping methods. However, the majority of Hazmat items have no fee when shipping with a ground method.

Most Hazardous Goods are subject to air and international transport fees. This fee is $40 for domestic air shipping methods and $80 for international shipping methods.

Mail the completed form with the original UPC code from the product package and a copy of your sales receipt with the eligible product circled postmarked no later than 1/1/2012. Service activation is required; mail in one of the following options as proof of service activation: